One year ago, Nolan could run a mile in m minutes. Since then, his time has decreased by 9%. Write two different expressions that represent the number of minutes it now takes Nolan to run a mile, and show or explain why the expressions are equivalent.

Then why is the question on here if you know the answer

Answerthe simplified expression isexplanationthe given expression is,let us deal with the bracket first.the two negatives in the parenthesis will become positive.the expression now becomes,we now expand the parenthesis to get,we group like terms to obtain,this simplifies to,